Didn't think I was using Twitter to log in. My Twitter user name is different for one. I will click ok next time. I have only been claiming Not Now.

Sent from my iPhone using Tapatalk

I think that Tapatalk has its own authentication so that if you have accounts on five different message boards, it will remember your five different message boards for you and you don't have to sign in for each of them on all twenty-seven of your phones and tablets. (If this is the only board where you use Tapatalk, then Tapatalk authentication is less useful.) I don't know, but I imagine that they let you authenticate to them using Twitter (and maybe Facebook, etc). You still have to enter your credentials to login to UWS, though.